External Connections (Connection Board) - SystemAir SAVE VTC 200-1 Service & Accessories Installation Manual

28 | Service
Position
6
7
8
9
10
11
12
13
14
15
16
17
4.5.2

External connections (Connection board)

External connections to the main circuit board are done via connection board situated inside of the unit.
Position Description
1
Connection to the main circuit board
2
Connection for external control panel (HMI) or Internet access module (IAM)
3
Modbus RS485 connection
AI6–7
Freely configurable Analog input. None/Input type selection in HMI.
DO1–4
Freely configurable digital output.
DO2 default configuration: Outdoor-/Exhaust Air Damper
DO3 default configuration: Activate Cooling
DO4 default configuration: Sum Alarm
AO3–5 Freely configurable analog output. Actuator type 0–10V, 10–0V, 2–10V, 10–2V.
AO3 default configuration: Heating (only for VTC 200/300/500/700, VTR 100/700 type models).
AO4 default configuration: Cooling
Description
Terminals for internal relative humidity/temperature sensor
Analog input 1 — Outdoor air sensor
Analog input 2 — Supply air sensor
Analog input 3 — Freely configurable
Analog input 4 — Freely configurable / Overheat temperature sensor (units with
heater)
Analog input 5 — Freely configurable
Digital input 1 — Rotor guard sensor (only for VSR, VTR models)
Digital input 2 — Freely configurable / Cooker hood (VTR 150/K unit)
Analog output 2 — Freely configurable / Electrical heater controller (VTC 700 unit)
Analog output 1 — Rotary heat exchanger control signal (for VSR, VTR type models) /
Damper control signal (for VTC, VSC type models), UI6 — Bypass damper feedback
signal (for VTC, VSC type models)
Terminals for speed control of extract air fan
Terminals for speed control of supply air fan
Fig. 7 External connection box and board
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